<template>
  <div class="icons">
     <swiper :options="swiperOption">
      <swiper-slide v-for="(page,index) of pages" :key="index">
        <div class="icon" v-for="item of page" :key="item.id">
         <div class="icon-img">
            <img class="icon-img-content" :src="item.imgUrl" alt="">
         </div>
         <p class="icon-desc">{{item.desc}}</p>
        </div>
      </swiper-slide>
    </swiper>
  </div>
</template>

<script>
export default {
    name:'HomeIcons',
    // 通过计算属性变成两页
    props:{
      list:Array
    },
    data () {
      return {
        swiperOption: {
          autoplay:false
        }
      }
    },
    computed:{
      pages() {
        const pages =[]
        this.list.forEach((item,index) =>{
          const page = Math.floor(index / 8)
          if(!pages[page]){
            pages[page] = []
          }
          pages[page].push(item)
        })
        return pages
      }
    }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/mixins.styl'
  .icons
    overflow:hidden
    width:100%
    height:0
    padding-bottom:50%
  .icons
    margin-top:.2rem
    .icon
      width:25%
      height :0
      padding-bottom 25%
      float:left
      overflow :hidden
      position:relative
      .icon-img
        position :absolute
        top :0
        left :0
        right :0
        bottom :.44rem
        box-sizing :border-box
        padding :.1rem
        .icon-img-content
          height:100%
          display :block
          margin:0 auto
      .icon-desc
        position :absolute
        left :0
        right :0
        bottom :0
        height :.44rem
        line-height :.44rem
        text-align :center
        ellipsis()

</style>
